APP-81 Polypropylene Anticorrosive Primer for Pipeline


Chloroprene rubber and APP (atactic polypropylene) as binder, antirust pigment, filler, additives and solvent, etc.


Anticorrosive coating for metal, concrete pipeline in industrial and agricultural cities and national defense construction


Good adhesion, flexibility, abrasion resistance, resistance to water-bleeding and electrical insulation, resistance to chemical medium, excellent resistance to mildew and fungus, quick drying and convenience for constructing.

Physical Parameter:

Color: Brown

Theoretic Dosage: 200-250 g/m2

Dry Film Thickness: 40-50μm

Drying Time: 23±2℃, Dust-Free: ≤1 h, Hard Drying: ≤24 h

Storage: 1 year

Application Parameter:

Diluent/ Dilution Ratio: Diluent only for polypropylene anticorrosive primer for pipeline

Coating Method: High-pressure airless spray, brushing, roll coating

Surface Treatment: Sand blasting, rust removing by chemicals and machine must be made on surface of steel till qualified to Sa 2.5 Standard of Sweden. Coating primer after batching and wedging concrete surface.

Recommended Layers: 1~2 Layers, 80~100μm DFT

Post-Coat Accessory Coatings: APP polypropylene anticorrosive topcoat for pipeline

Coating Interval: 23±2℃, Min. 1 h, Max. 7 d


The data in this Specification is derived from experiments and practical applications, and can be regarded as a guide for application. The title product is only for specialty application. Otherwise we only guarantee the quality of the said coating itself if it is used in other sectors undescribed herein or fresh sectors.

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